A low frequency/small Power focusing ultrasonic therapeutic apparatus

A focused ultrasonic, low-power technology, applied in ultrasonic therapy, treatment, etc., can solve problems such as limited HIFU transmittance, platelet deposition, brain tissue damage, etc., and achieve the effect of enriching treatment, perfecting treatment, and reducing energy

Inactive Publication Date: 2007-04-11
CHONGQING MEDICAL UNIVERSITY
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Problems solved by technology

Although a large number of in vitro and animal experiments have shown that HIFU can better promote the dissolution of fibrin and provide a promising new therapy for clinical application, the application of high-frequency ultrasound in intracranial diseases is greatly limited. , the biggest obstacle is the absorption and impedance of the skull to sound waves, and the transmittance of HIFU

Method used

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  • A low frequency/small Power focusing ultrasonic therapeutic apparatus
  • A low frequency/small Power focusing ultrasonic therapeutic apparatus
  • A low frequency/small Power focusing ultrasonic therapeutic apparatus

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Embodiment Construction

[0018] The present invention includes a low-frequency power source and an ultrasonic transducer connected to the low-frequency power source. As shown in FIG. 1 , the low-frequency power source includes a power supply circuit, a control and adjustment circuit, a power oscillation circuit, and an ultrasonic transducer.

[0019] The power supply circuit includes a transformer and rectifier circuit for converting AC power into a low-voltage DC output, and also includes a transformer connected to the output of the transformer and rectifier circuit for converting the output of the transformer and rectifier circuit into three A DC stabilized power supply circuit for grouping stable DC power supplies of different voltage levels. The control and adjustment circuit includes a gear position control circuit for controlling the ultrasonic output intensity (ie power), an output time control circuit for controlling the action time of the ultrasonic wave, and a gear position display circuit an...

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Abstract

The invention comprises ultrasonic transducer, low-frequency power source, and the control circuit described above is connected ultrasonic transducer, the described ultrasonic transducer includes a sound head, which was set side of a focusing concave mirror. Through the focusing concave mirror, the low-frequency ultrasonic generated by ultrasonic transducer focuses and biological effects generated in focal area was restricted to certain position, not only focus the ultrasonic beam (targeted), reduce the required energy by two energy level change of one factor and the use of combinative micro vesicle, thus reduce injury risk of brain tissue, but also provides us a non-invasive, targeted thrombolytic, blood-brain barrier (BBB) opening and gene transfection of nerve cells therapy device, especially as a barrier to the blood-brain transmission of drugs and macromolecular in the central nervous system, and an important mean to enter the brain tissue.

Description

technical field [0001] The invention relates to a disease treatment device, in particular to a low-frequency and low-power focused ultrasonic treatment instrument. technical background [0002] Ultrasound technology has been applied to the medical field for nearly half a century, and is mainly used in the clinical diagnosis of heart, kidney, liver and other chest and abdominal distension organs. However, the application of ultrasound technology in the research of diseases of the central nervous system, such as the research on the treatment of brain tumors and cerebrovascular diseases, is rare, and only in recent years have some breakthroughs. In addition to the low transmittance and high impedance of ultrasound penetrating the skull, the key issue is also related to the damaging effect of high-energy ultrasound on brain tissue. Therefore, it has always been the bottleneck of high-energy focused ultrasound (HIFU) non-invasive treatment of intracranial diseases. In recent yea...

Claims

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Application Information

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IPC IPC(8): A61N7/00
Inventor 程远马颖毛思中李代贵陈维福
Owner CHONGQING MEDICAL UNIVERSITY
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